public void FromXml_WrongVersion()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
se.Attributes.Remove("version");
se.Attributes.Add("version", "2");
dp.FromXml(se);
}
public void FromXml_NoVersion()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
SecurityElement w = new SecurityElement(se.Tag);
w.AddAttribute("class", se.Attribute("class"));
dp.FromXml(w);
}
public void FromXml_WrongTagCase()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
se.Tag = "IPERMISSION"; // instead of IPermission
dp.FromXml(se);
// note: normally IPermission classes (in corlib) DO care about the
// IPermission tag
}
public void FromXml_WrongTag()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
se.Tag = "IMono";
dp.FromXml(se);
// note: normally IPermission classes (in corlib) DO care about the
// IPermission tag
}
// <Snippet1>
public void ConstructDnsPermission()
{
try
{
// Create a DnsPermission instance.
DnsPermission permission = new DnsPermission(PermissionState.None);
// Create a SecurityElement instance by calling the ToXml method on the
// DnsPermission instance.
// Print its attributes, which hold the XML encoding of the DnsPermission
// instance.
Console.WriteLine("Attributes and Values of 'DnsPermission' instance :");
PrintKeysAndValues(permission.ToXml().Attributes);
// Create a SecurityElement instance.
SecurityElement securityElementObj = new SecurityElement("IPermission");
// Add attributes and values of the SecurityElement instance corresponding to
// the permission instance.
securityElementObj.AddAttribute("version", "1");
securityElementObj.AddAttribute("Unrestricted", "true");
securityElementObj.AddAttribute("class", "System.Net.DnsPermission");
// Reconstruct a DnsPermission instance from an XML encoding.
DnsPermission permission1 = new DnsPermission(PermissionState.None);
permission1.FromXml(securityElementObj);
// Print the attributes and values of the constructed DnsPermission object.
Console.WriteLine("After reconstruction Attributes and Values of new DnsPermission instance :");
PrintKeysAndValues(permission1.ToXml().Attributes);
}
catch (NullReferenceException e)
{
Console.WriteLine("NullReferenceException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (SecurityException e)
{
Console.WriteLine("SecurityException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (Exception e)
{
Console.WriteLine("Exception caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
}
public void FromXml_NoClass()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
SecurityElement w = new SecurityElement(se.Tag);
w.AddAttribute("version", se.Attribute("version"));
dp.FromXml(w);
// note: normally IPermission classes (in corlib) DO NOT care about
// attribute "class" name presence in the XML
}
public void FromXml_WrongClass()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
SecurityElement se = dp.ToXml();
SecurityElement w = new SecurityElement(se.Tag);
w.AddAttribute("class", "Wrong" + se.Attribute("class"));
w.AddAttribute("version", se.Attribute("version"));
dp.FromXml(w);
// doesn't care of the class name at that stage
// anyway the class has already be created so...
}
public void FromXml_Null()
{
DnsPermission dp = new DnsPermission(PermissionState.None);
dp.FromXml(null);
}